A connection to the Cloud Pub/Sub service to publish events.
This interface defines pure-virtual methods for each of the user-facing overload sets in BlockingPublisher. That is, all of BlockingPublisher's overloads will forward to the one pure-virtual method declared in this interface. This allows users to inject custom behavior (e.g., with a Google Mock object) in a BlockingPublisher object for use in their own tests.
Applications may define classes derived from PublisherConnection, for example, because they want to mock the class. To avoid breaking all such derived classes when we change the number or type of the arguments to the member functions we define lightweight structures to pass the arguments.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThis document details the \u003ccode\u003eBlockingPublisherConnection\u003c/code\u003e class for the Google Cloud Pub/Sub service, used for publishing events.\u003c/p\u003e\n"],["\u003cp\u003eVersion 2.37.0-rc is the latest release candidate, and a history of versions back to 2.11.0 is accessible through this page.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eBlockingPublisherConnection\u003c/code\u003e allows users to inject custom behavior into \u003ccode\u003eBlockingPublisher\u003c/code\u003e objects, useful for testing.\u003c/p\u003e\n"],["\u003cp\u003eThe interface includes the pure-virtual \u003ccode\u003ePublish\u003c/code\u003e method, which mirrors the user-facing \u003ccode\u003eBlockingPublisher::Publish()\u003c/code\u003e overloads, along with a \u003ccode\u003eoptions()\u003c/code\u003e function.\u003c/p\u003e\n"],["\u003cp\u003eLightweight structures, such as \u003ccode\u003ePublishParams\u003c/code\u003e, are used to pass arguments, ensuring compatibility when function parameters are changed.\u003c/p\u003e\n"]]],[],null,[]]
